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Infiniti G37 Coupe. Manual - part 1143
B2603 SHIFT POSITION STATUS
SEC-69
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
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D
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SEC
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P
B2603 SHIFT POSITION STATUS
Description
INFOID:0000000001699966
BCM confirms the shift position with the following 4 signals.
• A/T selector lever
• P/N position switch
• P position signal from IPDM E/R (CAN)
• P position signal from TCM (CAN)
DTC Logic
INFOID:0000000001699967
DTC DETECTION LOGIC
NOTE:
• If DTC B2603 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B2603 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine under the following conditions and wait for at least 1 second.
-
A/T selector lever is in the P position.
-
Do not depress the brake pedal.
2.
Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001699968
1.
CHECK DTC WITH TCM
Check “Self diagnostic result” with CONSULT-III. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> repair or replace the malfunctioning parts.
2.
CHECK PNP SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect A/T assembly connector and BCM connector M123.
3.
Check continuity between A/T assembly harness connector and BCM harness connector.
DTC
Self-diagnosis
name
DTC detecting condition
Possible causes
B2603
SHIFT POSITION
STATUS
BCM detects the followings status for 500 ms or more when
shift is in P position, and ignition switch is in ON position.
• Park/neutral position (PNP) switch: approx. 0V
• A/T device (detention switch): approx 0V
• Harness or connector
(A/T device circuit is open or
shorted.)
• Harness or connectors
[Park/neutral position (PNP)
switch circuit is open or
shorted.]
• A/T device (detention
switch)
• Park/neutral position (PNP)
switch